JP5898948B2 - Synthetic resin cap, closure device, and beverage closure device - Google Patents

Synthetic resin cap, closure device, and beverage closure device Download PDF

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Publication number
JP5898948B2
JP5898948B2 JP2011285164A JP2011285164A JP5898948B2 JP 5898948 B2 JP5898948 B2 JP 5898948B2 JP 2011285164 A JP2011285164 A JP 2011285164A JP 2011285164 A JP2011285164 A JP 2011285164A JP 5898948 B2 JP5898948 B2 JP 5898948B2
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Prior art keywords
synthetic resin
opening end
cap
seal protrusion
mouth
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JP2013133143A5 (en
JP2013133143A (en
Inventor
原田　充春
充春 原田
久野　正敬
正敬 久野
朗子 荻野
朗子 荻野
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Closure Systems International Japan Ltd
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Closure Systems International Japan Ltd
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Priority to JP2011285164A priority Critical patent/JP5898948B2/en
Application filed by Closure Systems International Japan Ltd filed Critical Closure Systems International Japan Ltd
Priority to RU2014129330/12A priority patent/RU2588438C2/en
Priority to PCT/JP2012/082484 priority patent/WO2013099655A1/en
Priority to ES12861824.6T priority patent/ES2611406T3/en
Priority to MX2014007764A priority patent/MX2014007764A/en
Priority to CN201280064514.2A priority patent/CN104053610B/en
Priority to IN5727DEN2014 priority patent/IN2014DN05727A/en
Priority to KR1020147019558A priority patent/KR101582593B1/en
Priority to AU2012359370A priority patent/AU2012359370A1/en
Priority to EP12861824.6A priority patent/EP2799362B1/en
Priority to US14/368,632 priority patent/US9718587B2/en
Publication of JP2013133143A publication Critical patent/JP2013133143A/en
Priority to PH12014501451A priority patent/PH12014501451B1/en
Priority to CL2014001734A priority patent/CL2014001734A1/en
Priority to ZA2014/05043A priority patent/ZA201405043B/en
Publication of JP2013133143A5 publication Critical patent/JP2013133143A5/ja
Application granted granted Critical
Publication of JP5898948B2 publication Critical patent/JP5898948B2/en
Priority to AU2016202319A priority patent/AU2016202319B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Description

本発明は、容器の口元部を閉止する合成樹脂製キャップ、前記合成樹脂製キャップを用いた閉止装置、および飲料入り閉止装置に関する。 The present invention is a synthetic resin cap for closing the mouth portion of the container, closure device using the synthetic resin cap, and a beverage containing closing means.

合成樹脂製キャップ（以下、単にキャップという）としては、天板部とその周縁から垂下した筒部とからなるキャップ本体と、天板部下面に設けられた軟質樹脂製のライナーとを備え、筒部の内面に、容器の口元部の雄ネジに嵌合するネジ部が形成されたものがある（例えば、特許文献１参照）。
図５は、キャップの一例を示すもので、このキャップ３１は、円板状の天板部２とその周縁から垂下した筒部３とを有するキャップ本体４と、天板部２下面に設けられた略円板状のライナー３５とを備えている。
ライナー３５の下面には、容器２０の口元部２１の開口端部２１Ａの内縁に当接する内側シール突起４２が形成されている。
図６は、キャップの他の例を示すもので、このキャップ５１は、円板状の天板部２とその周縁から垂下した筒部３とを有するキャップ本体４と、天板部２下面に設けられた略円板状のライナー５５とを備えている。
ライナー５５の下面には、容器２０の口元部２１の開口端部２１Ａの内縁に当接する内側シール突起６２と、開口端部２１Ａの外縁に当接する外側シール突起６３とが形成されている。外側シール突起６３は、筒部３に達して形成されている。 A synthetic resin cap (hereinafter simply referred to as a cap) includes a cap body composed of a top plate portion and a cylindrical portion suspended from the periphery thereof, and a soft resin liner provided on the bottom surface of the top plate portion, There is one in which a screw part that fits into the male screw of the mouth part of the container is formed on the inner surface of the part (see, for example, Patent Document 1).
FIG. 5 shows an example of a cap. The cap 31 is provided on a cap body 4 having a disk-shaped top plate portion 2 and a cylindrical portion 3 hanging from the periphery thereof, and on the bottom surface of the top plate portion 2. And a substantially disc-shaped liner 35.
On the lower surface of the liner 35, an inner seal protrusion 42 is formed that contacts the inner edge of the opening end 21 </ b> A of the mouth portion 21 of the container 20.
FIG. 6 shows another example of the cap. The cap 51 includes a cap body 4 having a disk-shaped top plate portion 2 and a cylindrical portion 3 hanging from the periphery thereof, and a lower surface of the top plate portion 2. And a substantially disc-shaped liner 55 provided.
On the lower surface of the liner 55, an inner seal protrusion 62 that contacts the inner edge of the opening end 21A of the mouth portion 21 of the container 20 and an outer seal protrusion 63 that contacts the outer edge of the opening end 21A are formed. The outer seal protrusion 63 is formed so as to reach the cylindrical portion 3.

内容液を容器に充填する際には、通常８０℃以上の高温の内容液を容器に充填した状態でキャップの装着を行う、いわゆるホットパックが用いられている。また、殺菌効果を高めるため、キャップ装着後、容器およびキャップを高温水により加温することも行われている。
これらの操作を行う際には、容器が高温にさらされて口元部が熱収縮等により変形（例えば開口端部が内方または外方に曲げ変形）を起こすことにより、容器口元部とキャップとの間の密着性が不十分となり密封性が低下するのを防ぐ必要がある。
また、高温での充てんを行わない場合でも、口元部の寸法（内径、外径等）の変動によりキャップとの間の密着性が変化し、密封性に影響が及ぶことがあった。 When filling the content liquid into the container, a so-called hot pack is used in which the cap is attached in a state where the high-temperature content liquid of 80 ° C. or higher is normally filled in the container. In order to enhance the sterilizing effect, the container and the cap are heated with hot water after the cap is attached.
When performing these operations, the container is exposed to a high temperature and the mouth part is deformed by heat shrinkage or the like (for example, the opening end is bent or deformed inward or outward). It is necessary to prevent the adhesiveness between the layers from becoming insufficient and the sealing performance from deteriorating.
Further, even when filling is not performed at a high temperature, the adhesiveness between the cap and the cap may be changed due to variations in the dimensions (inner diameter, outer diameter, etc.) of the mouth portion.

特開２００９−１１３８３３号公報JP 2009-113833 A

本発明は上記事情に鑑みてなされたもので、密封性の低下を防ぐことができる合成樹脂製キャップ、閉止装置、および飲料入り閉止装置を提供することを目的としている。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a synthetic resin cap , a closing device, and a beverage containing closing device that can prevent deterioration in sealing performance.

本発明は、容器の口元部に装着される合成樹脂製キャップであって、天板部とその周縁から垂下した筒部とを有するキャップ本体と、前記天板部下面に設けられたライナーとを備え、前記ライナーは、平板部と、前記平板部下面に形成されて前記口元部の開口端部に内縁側から当接する内側シール突起と、前記平板部下面に形成されて前記口元部の開口端部に外縁側から当接する外側シール突起とを有し、前記ライナーの外縁は、前記筒部に対して内方側に離れて前記筒部との間に空間を確保して形成され、
前記外側シール突起は、前記空間を隔てて前記キャップ本体から離れており、前記外側シール突起の外径は、前記開口端部の外径より小さく、前記合成樹脂製キャップを前記口元部に装着したときに、前記外側シール突起は、前記口元部の開口端部によって径方向外方に弾性的に変形して、少なくとも前記開口端部の外縁に押圧状態で当接する合成樹脂製キャップを提供する。
本発明では、前記外側シール突起の外縁が、前記平板部の外縁に達して形成されていることが好ましい。
前記外側シール突起の外面は、前記平板部の外縁の端面に面一に形成されていることが好ましい。
前記外側シール突起は、内面で前記開口端部に当接し、前記内面は、拡径方向にいくほど下降する傾斜面であることが好ましい。
前記ライナーには、前記内側シール突起と前記外側シール突起との間に、前記天板部の下面に沿う中間当接部が形成され、前記中間当接部は、前記開口端部の開口端面に当接可能であることが好ましい。
前記筒部には、洗浄水を前記キャップ本体内に導く洗浄水導入孔が形成されていることが好ましい。 The present invention is a synthetic resin cap attached to the mouth portion of a container, comprising: a cap body having a top plate portion and a cylindrical portion hanging from the periphery thereof; and a liner provided on the lower surface of the top plate portion. The liner includes: a flat plate portion; an inner seal protrusion formed on the lower surface of the flat plate portion and in contact with an opening end portion of the lip portion from an inner edge side; and an open end of the lip portion formed on the lower surface of the flat plate portion. An outer seal protrusion that abuts the outer edge side of the liner, and the outer edge of the liner is formed inwardly with respect to the cylindrical portion so as to ensure a space between the cylindrical portion,
The outer seal protrusion is separated from the cap body with the space therebetween, and the outer diameter of the outer seal protrusion is smaller than the outer diameter of the opening end, and the synthetic resin cap is attached to the mouth portion. In some cases, the outer seal projection is elastically deformed radially outward by the opening end of the mouth portion, and provides a synthetic resin cap that contacts at least the outer edge of the opening end in a pressed state.
In the present invention, it is preferable that an outer edge of the outer seal protrusion is formed to reach an outer edge of the flat plate portion.
The outer surface of the outer seal protrusion is preferably formed flush with the end surface of the outer edge of the flat plate portion.
It is preferable that the outer seal protrusion is in contact with the opening end portion on the inner surface, and the inner surface is an inclined surface that descends as the diameter increases.
The liner is formed with an intermediate contact portion along the lower surface of the top plate portion between the inner seal protrusion and the outer seal protrusion, and the intermediate contact portion is formed on the opening end surface of the opening end portion. It is preferable that it can contact | abut.
It is preferable that a cleaning water introduction hole for guiding cleaning water into the cap body is formed in the cylindrical portion.

本発明は、飲料が充てんされる容器と、その口元部に装着される合成樹脂製キャップとを備えた閉止装置であって、前記合成樹脂製キャップが、前述のものである閉止装置を提供する。
本発明は、飲料が充填された容器と、その口元部に装着される合成樹脂製キャップとを備えた飲料入り閉止装置であって、前記合成樹脂製キャップが、前述のものである飲料入り閉止装置を提供する。 The present invention provides a closing device comprising a container filled with a beverage and a synthetic resin cap attached to the mouth of the container, wherein the synthetic resin cap is as described above. .
The present invention is a beverage containing closure device comprising a container filled with a beverage and a synthetic resin cap attached to the mouth of the beverage, wherein the synthetic resin cap is the aforementioned beverage closure Providing equipment.

本発明によれば、ライナーの外縁が筒部に対して内方側に離間して形成されているため、外側シール突起は筒部から内方に離れた位置に形成されており、外側シール突起の外方側には空間が確保されている。
このため、外側シール突起は、径方向外方の力が加えられると、前記空間を利用して、外方に容易に変形可能である。
よって、キャップを口元部に装着すると、外側シール突起は外方寄りに変形して開口端部の外縁の少なくとも一部を覆う。
外側シール突起の外径は開口端部の外径より小さいため、外側シール突起は開口端部に押されて外方に変形した状態で開口端部の外縁に当接することから、弾性反発力によりこの外縁に常に適正な押圧力で当接する。よって、確実な密封が可能である。
また、外側シール突起は、外方に変形可能であるため、口元部の外径寸法が変動した場合（特に外径が設計値より大きくなった場合）でも、外側シール突起が開口端部に応じた形状となって適正な押圧力で確実に開口端部に当接する。このため、口元部の外径寸法が変動した場合でも確実な密封が可能である。
また、ライナーは、外側シール突起だけでなく内側シール突起でも開口端部に接するため、確実な密封が可能となり、耐圧性を高めることができる。
さらに、ライナーは、外側シール突起が変形により適度な押圧力で開口端部に当接することに加え、複数箇所で開口端部に当接するため、各所の押圧力を低く設定できる。開口端部に局所的に過大な力が加えられることがないため、高温条件下でも口元部の変形を防止できる。
また、キャップでは、開口端部に局所的に過大な力が加えられないため、開栓トルクを抑制できることから、開栓しやすさの点でも有利である。また、押圧力が局所的に大きくならないため、ライナーの一部が削れて破片が生じるのを防止できる。 According to the present invention, since the outer edge of the liner is formed to be spaced inward with respect to the tube portion, the outer seal protrusion is formed at a position spaced inward from the tube portion. Space is secured on the outer side of.
For this reason, when a radially outward force is applied, the outer seal protrusion can be easily deformed outward using the space.
Therefore, when the cap is attached to the mouth portion, the outer seal projection is deformed outward to cover at least a part of the outer edge of the opening end portion.
Since the outer diameter of the outer seal protrusion is smaller than the outer diameter of the opening end, the outer seal protrusion is pressed against the opening end and deformed outwardly, and comes into contact with the outer edge of the opening end. The outer edge always abuts with an appropriate pressing force. Therefore, reliable sealing is possible.
In addition, the outer seal protrusion can be deformed outward, so even if the outer diameter of the lip varies (especially when the outer diameter is larger than the design value), the outer seal protrusion will respond to the opening end. It is in the shape of an abutment and reliably contacts the open end with an appropriate pressing force. For this reason, reliable sealing is possible even when the outer diameter of the mouth portion varies.
Further, since the liner is in contact with the opening end portion not only by the outer seal projection but also by the inner seal projection, the liner can be surely sealed and the pressure resistance can be improved.
Further, since the outer seal projection contacts the opening end with an appropriate pressing force due to deformation, the liner contacts the opening end at a plurality of locations, so that the pressing force at each location can be set low. Since excessive force is not locally applied to the opening end, deformation of the mouth portion can be prevented even under high temperature conditions.
Moreover, since an excessive force is not locally applied to the opening end portion of the cap, the opening torque can be suppressed, which is advantageous in terms of easy opening. In addition, since the pressing force does not increase locally, it is possible to prevent a part of the liner from being scraped and causing fragments.

本発明の合成樹脂製キャップの一実施形態の一部を示す断面図である。It is sectional drawing which shows a part of one Embodiment of the synthetic resin caps of this invention. 図１に示す合成樹脂製キャップのライナーの一部を示す断面図である。It is sectional drawing which shows a part of liner of the synthetic resin caps shown in FIG. 図１に示す合成樹脂製キャップを示す全体断面図である。It is a whole sectional view showing the synthetic resin cap shown in FIG. 図１に示す合成樹脂製キャップを容器の口元部に装着した状態を示す断面図である。It is sectional drawing which shows the state which mounted | wore the synthetic resin cap shown in FIG. 合成樹脂製キャップの一例の一部を示す断面図である。It is sectional drawing which shows a part of example of a synthetic resin cap. 合成樹脂製キャップの他の例の一部を示す断面図である。It is sectional drawing which shows a part of other example of the synthetic resin caps.

図１〜図３は、本発明の合成樹脂製キャップの一実施形態およびこれを用いた閉止装置を示すもので、ここに示す閉止装置は、容器２０と、その口元部２１に装着される合成樹脂製キャップ１（以下、単にキャップ１という）とから構成されている。
図３における符号Ｃ１はキャップ１の中心軸を示す。以下の説明において、上下方向および高さ方向とは図１〜図３における上下方向であり、中心軸Ｃ１に沿う方向である。 1 to 3 show an embodiment of a synthetic resin cap according to the present invention and a closing device using the same. The closing device shown here is a container 20 and a synthetic member attached to the mouth portion 21 thereof. It consists of a resin cap 1 (hereinafter simply referred to as cap 1).
3 indicates the central axis of the cap 1. In the following description, the vertical direction and the height direction are the vertical direction in FIGS. 1 to 3 and are directions along the central axis C1.

図１および図２に示すように、容器２０は、例えばポリエチレンテレフタレート（ＰＥＴ）などの合成樹脂からなり、飲料が充てんされる容器本体（図示略）と、その上部に形成された円筒状の口元部２１とを有する。
口元部２１の外面２１ｃには雄ネジ２２が形成されている。外面２１ｃには径方向外方に突出する環状突起である係止段部（図示略）が形成されている。
口元部２１の内面２１ａおよび外面２１ｃは、容器２０の軸方向に沿う面である。開口端部２１Ａの開口端面２１ｂは容器２０の軸方向に垂直な面である。
開口端面２１ｂの内縁から内面２１ａの上縁までの部分は、断面略円弧形の内縁湾曲部２１ｄ（内縁）とされ、開口端面２１ｂの外縁から外面２１ｃの上縁までの部分は、断面略円弧形の外縁湾曲部２１ｅ（外縁）とされている。開口端部２１Ａは、内縁湾曲部２１ｄと開口端面２１ｂと外縁湾曲部２１ｅとを含む。 As shown in FIGS. 1 and 2, the container 20 is made of a synthetic resin such as polyethylene terephthalate (PET), for example, and a container body (not shown) filled with a beverage, and a cylindrical mouth formed on the upper part thereof. Part 21.
A male screw 22 is formed on the outer surface 21 c of the mouth portion 21. The outer surface 21c is formed with a locking step (not shown) that is an annular protrusion protruding radially outward.
The inner surface 21 a and the outer surface 21 c of the mouth portion 21 are surfaces along the axial direction of the container 20. The opening end surface 21 b of the opening end 21 </ b> A is a surface perpendicular to the axial direction of the container 20.
A portion from the inner edge of the opening end surface 21b to the upper edge of the inner surface 21a is an inner edge curved portion 21d (inner edge) having a substantially arc-shaped cross section, and a portion from the outer edge of the opening end surface 21b to the upper edge of the outer surface 21c is substantially in cross section. An arcuate outer edge curved portion 21e (outer edge) is formed. The opening end 21A includes an inner edge curved portion 21d, an opening end surface 21b, and an outer edge curved portion 21e.

口元部２１は、透明性の確保のため非結晶とするのが好ましい。口元部２１は、肉厚方向の可視光の光透過率が例えば５０％以上であることが好ましい。
なお、口元部２１は、加熱などにより結晶化することもできる。 The mouth portion 21 is preferably amorphous to ensure transparency. The mouth portion 21 preferably has a light transmittance of visible light in the thickness direction of, for example, 50% or more.
The mouth part 21 can also be crystallized by heating or the like.

図３に示すように、キャップ１は、円板状の天板部２とその周縁から垂下した筒部３とを有するキャップ本体４と、天板部２の下面２ａに設けられた略円板状のライナー５（合成樹脂製キャップ用ライナー）とを備えている。
図１に示すように、天板部２は、平板状の主部２ｂと、その周縁に形成された断面略円弧形の外縁湾曲部２ｃとを有する。外縁湾曲部２ｃは主部２ｂの外縁から筒部３の上縁にかけて形成された湾曲部分である。外縁湾曲部２ｃは、拡径方向に向けて徐々に下降する湾曲形状とされている。 As shown in FIG. 3, the cap 1 includes a cap body 4 having a disk-shaped top plate portion 2 and a cylindrical portion 3 suspended from the periphery thereof, and a substantially disc provided on the lower surface 2 a of the top plate portion 2. And a liner 5 (synthetic resin cap liner).
As shown in FIG. 1, the top plate portion 2 has a flat plate-like main portion 2b and an outer edge curved portion 2c having a substantially arc-shaped cross section formed at the periphery thereof. The outer edge curved portion 2 c is a curved portion formed from the outer edge of the main portion 2 b to the upper edge of the cylindrical portion 3. The outer edge curved portion 2c has a curved shape that gradually descends in the diameter increasing direction.

図３に示すように、筒部３は、スコア６（弱化部）によって、主部８と、ブリッジ７によって主部８に連結されたタンパーエビデンスリング部（ＴＥリング部）９とに区画されている。
主部８の内面には、容器２０の雄ネジ２２に螺合するネジ部１０が形成されている。ネジ部１０は、１条または複数条の螺旋状に形成された突条である。 As shown in FIG. 3, the cylinder portion 3 is divided into a main portion 8 by a score 6 (weakening portion) and a tamper evidence ring portion (TE ring portion) 9 connected to the main portion 8 by a bridge 7. Yes.
On the inner surface of the main portion 8, a screw portion 10 that is screwed into the male screw 22 of the container 20 is formed. The screw portion 10 is a ridge formed in one or a plurality of spirals.

筒部３上部には、洗浄水をキャップ１（キャップ本体４）の内部に導く洗浄水導入孔１６が形成されている。洗浄水導入孔１６は、洗浄水をキャップ１内に導くもので、外縁５ｃ、１３ｄと筒部３との間の空間（外方側空間１５）に通じている。すなわち、洗浄水導入孔１６の筒部３内面側の開口は、外方側空間１５に通じる空間（キャップ１と口元部２１との間の空間）に臨む位置にある。
洗浄水導入孔１６は、キャップ１の周方向に延在するスリット状とするのが好ましい。洗浄水導入孔１６の周方向の長さは、例えば０．５〜５ｍｍとすることができる。洗浄水導入孔１６の最大幅（上下方向の間隔）は、例えば０．０１〜０．１ｍｍとすることができる。
洗浄水導入孔１６は、ネジ部１０の上端より高い位置に形成するのが好ましい。図示例の洗浄水導入孔１６は、開口端面２１ｂより低い位置にある。
キャップ本体４の外径は、特に限定されないが、３０ｍｍ以上（例えば３５ｍｍ以上）であってよい。 A cleaning water introduction hole 16 that guides the cleaning water to the inside of the cap 1 (cap body 4) is formed in the upper part of the cylindrical portion 3. The cleaning water introduction hole 16 guides the cleaning water into the cap 1 and communicates with the space between the outer edges 5 c and 13 d and the cylindrical portion 3 (outer side space 15). In other words, the opening on the inner surface side of the cylindrical portion 3 of the cleaning water introduction hole 16 is at a position facing the space communicating with the outer space 15 (the space between the cap 1 and the mouth portion 21).
The cleaning water introduction hole 16 is preferably formed in a slit shape extending in the circumferential direction of the cap 1. The circumferential length of the cleaning water introduction hole 16 can be set to 0.5 to 5 mm, for example. The maximum width of the cleaning water introduction hole 16 (interval in the vertical direction) can be set to 0.01 to 0.1 mm, for example.
The cleaning water introduction hole 16 is preferably formed at a position higher than the upper end of the screw portion 10. The cleaning water introduction hole 16 in the illustrated example is at a position lower than the opening end surface 21b.
The outer diameter of the cap body 4 is not particularly limited, but may be 30 mm or more (for example, 35 mm or more).

図１および図２に示すように、ライナー５は、天板部２の下面２ａに設けられた円板状の平板部５ａと、平板部５ａの下面５ｂから下方に突出して形成された環状の内側シール突起１２と、平板部５ａの下面５ｂから下方に突出して形成された環状の外側シール突起１３と、これら２つのシール突起１２、１３の間にあって開口端面２１ｂに当接する中間当接部１４とを備えている。
平板部５ａは平板状とされ、外縁５ｃの端面５ｄは下面２ａに垂直（キャップ１の中心軸Ｃ１に沿う方向）に形成されている。 As shown in FIGS. 1 and 2, the liner 5 includes a disc-shaped flat plate portion 5 a provided on the lower surface 2 a of the top plate portion 2 and an annular shape that protrudes downward from the lower surface 5 b of the flat plate portion 5 a. An inner seal projection 12, an annular outer seal projection 13 formed to project downward from the lower surface 5b of the flat plate portion 5a, and an intermediate abutment portion 14 between the two seal projections 12 and 13 and abutting the opening end surface 21b. And.
The flat plate portion 5a has a flat plate shape, and the end surface 5d of the outer edge 5c is formed perpendicular to the lower surface 2a (in the direction along the central axis C1 of the cap 1).

内側シール突起１２は、開口端部２１Ａに内縁側から当接する突起であり、外面１２ｃのうち少なくとも開口端部２１Ａに当接する部分が、拡径方向にいくほど上昇するように傾斜した傾斜面である形状とされる。
図示例の内側シール突起１２は、突出方向に徐々に幅が狭くなる断面略台形状とされている。
この内側シール突起１２は、拡径方向にいくほど下降するように直線的に傾斜した内面１２ａと、内面１２ａの外縁から下面２ａに平行に形成された下面１２ｂと、拡径方向にいくほど上昇するように直線的に傾斜した外面１２ｃとを有する。 The inner seal projection 12 is a projection that comes into contact with the opening end 21A from the inner edge side, and is an inclined surface that is inclined so that at least a portion of the outer surface 12c that comes into contact with the opening end 21A rises in the diameter increasing direction. It has a certain shape.
The inner seal protrusion 12 in the illustrated example has a substantially trapezoidal cross section whose width gradually decreases in the protruding direction.
The inner seal protrusion 12 has an inner surface 12a that is linearly inclined so as to descend in the diameter increasing direction, a lower surface 12b that is formed in parallel to the lower surface 2a from the outer edge of the inner surface 12a, and rises in the diameter increasing direction. The outer surface 12c is inclined linearly.

下面１２ｂの内径は口元部２１の内径（内面２１ａの上縁における内径）より小さく、下面１２ｂの外径は口元部２１の内径より大きいことが好ましい。
なお、図示例の内側シール突起１２は、内面１２ａが傾斜面とされているが、内面１２ａは下面２ａに垂直な面（キャップ１の中心軸Ｃ１に沿う方向の面）であってもよい。 The inner diameter of the lower surface 12b is preferably smaller than the inner diameter of the mouth portion 21 (the inner diameter at the upper edge of the inner surface 21a), and the outer diameter of the lower surface 12b is preferably larger than the inner diameter of the mouth portion 21.
In the illustrated example, the inner seal protrusion 12 has an inclined inner surface 12a, but the inner surface 12a may be a surface perpendicular to the lower surface 2a (a surface along the central axis C1 of the cap 1).

図２に示すように、外面１２ｃの傾斜角度α１（天板部２の下面２ａに対する傾斜角度）は例えば１０〜４５°とすることができる。
外面１２ｃの傾斜角度は、小さすぎれば口元部２１の変形抑止効果および密封性が低くなり、大きすぎればキャップ１の巻締めしやすさに影響が及ぶが、傾斜角度α１を前記範囲とすることによって、巻締めしやすさを損なわずに、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 As shown in FIG. 2, the inclination angle α1 of the outer surface 12c (inclination angle with respect to the lower surface 2a of the top plate 2) can be set to 10 to 45 °, for example.
If the inclination angle of the outer surface 12c is too small, the effect of suppressing deformation and sealing performance of the mouth portion 21 will be low, and if it is too large, it will affect the ease of winding the cap 1, but the inclination angle α1 should be in the above range. Thus, the deformation suppressing effect of the mouth portion 21 and the sealing performance of the cap 1 can be improved without impairing the ease of winding.

外面１２ｃの径方向の幅Ｗ１は、０．５〜２ｍｍが好ましい。
外面１２ｃの幅は、小さすぎれば巻締めしやすさに影響が及び、大きすぎれば口元部２１の変形抑止効果および密封性が低くなるが、幅Ｗ１を前記範囲とすることによって、巻締めしやすさを損なわずに、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 The radial width W1 of the outer surface 12c is preferably 0.5 to 2 mm.
If the width of the outer surface 12c is too small, it will affect the ease of winding. If the width is too large, the deformation suppressing effect and the sealing performance of the mouth portion 21 will be reduced. The deformation suppressing effect of the mouth portion 21 and the sealing performance of the cap 1 can be improved without impairing the ease.

内側シール突起１２の高さＨ１（中間当接部１４からの高さ）は、０．２〜２ｍｍが好ましい。
内側シール突起１２は、低すぎれば口元部２１の変形抑止効果および密封性が低くなり、高すぎればキャップ１の巻締めしやすさに影響が及ぶが、高さＨ１を前記範囲とすることによって、巻締めしやすさを損なわずに、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 The height H1 (height from the intermediate contact portion 14) of the inner seal protrusion 12 is preferably 0.2 to 2 mm.
If the inner seal protrusion 12 is too low, the deformation suppressing effect and the sealing performance of the mouth portion 21 will be low, and if it is too high, it will affect the ease of tightening the cap 1, but by setting the height H1 to the above range, The deformation suppressing effect of the mouth portion 21 and the sealing performance of the cap 1 can be improved without impairing the ease of winding.

図４は、口元部２１に装着した状態のキャップ１を示す図である。図１および図４に示すように、内側シール突起１２の外面１２ｃは、主に開口端部２１Ａの内縁湾曲部２１ｄに当接する。詳しくは、内側シール突起１２は厚さ方向に圧縮変形した状態で外面１２ｃが内縁湾曲部２１ｄ、および開口端面２１ｂの一部領域に当接している。
外面１２ｃは弾性的な反発力によって内縁湾曲部２１ｄおよび開口端面２１ｂの一部領域に押圧状態で当接する。外面１２ｃからの押圧力は、下方にいくほど拡径する方向（図１の右斜め下方）の成分を含む。 FIG. 4 is a view showing the cap 1 in a state of being attached to the mouth portion 21. As shown in FIGS. 1 and 4, the outer surface 12c of the inner seal protrusion 12 mainly abuts on the inner edge curved portion 21d of the opening end portion 21A. Specifically, the inner seal protrusion 12 is compressed and deformed in the thickness direction, and the outer surface 12c is in contact with the inner edge curved portion 21d and a partial region of the opening end surface 21b.
The outer surface 12c abuts against a partial region of the inner edge curved portion 21d and the open end surface 21b in a pressed state by an elastic repulsive force. The pressing force from the outer surface 12c includes a component in a direction in which the diameter is increased toward the lower side (lower right diagonal in FIG. 1).

図３に示すように、外側シール突起１３は、内側シール突起１２から径方向外方に離間した位置に形成することが好ましい。図示例では、外側シール突起１３は、内側シール突起１２に対して中間当接部１４を隔てて形成されている。   As shown in FIG. 3, the outer seal protrusion 13 is preferably formed at a position spaced radially outward from the inner seal protrusion 12. In the illustrated example, the outer seal protrusion 13 is formed with respect to the inner seal protrusion 12 with an intermediate contact portion 14 therebetween.

中間当接部１４は、所定の幅をもって形成された円環状の領域であって、平板部５ａより厚く形成されている。中間当接部１４は下面２ａに沿って形成することができる。中間当接部１４は、開口端面２１ｂの中央位置２１ｂ１を含む領域に当接するように形成するのが好ましい。
中間当接部１４の幅Ｗ２は、０．１〜１ｍｍが好ましい。
中間当接部１４の幅は、小さすぎれば密封性が低くなり、大きすぎれば口元部２１の変形抑止効果に影響が及ぶ可能性があるが、幅Ｗ２を前記範囲とすることによって、中間当接部１４から開口端面２１ｂへの押圧力を十分にしてキャップ１の密封性を良好にするとともに、口元部２１の変形抑止効果を高めることができる。 The intermediate contact portion 14 is an annular region formed with a predetermined width, and is formed thicker than the flat plate portion 5a. The intermediate contact portion 14 can be formed along the lower surface 2a. The intermediate contact portion 14 is preferably formed so as to contact a region including the central position 21b1 of the opening end surface 21b.
The width W2 of the intermediate contact portion 14 is preferably 0.1 to 1 mm.
If the width of the intermediate abutting portion 14 is too small, the sealing performance is lowered. If the width is too large, there is a possibility that the effect of suppressing deformation of the mouth portion 21 may be affected. The pressing force from the contact portion 14 to the opening end surface 21b can be sufficiently increased to improve the sealing performance of the cap 1, and the effect of suppressing deformation of the mouth portion 21 can be enhanced.

中間当接部１４の厚さＴ１は、０．２〜２ｍｍが好ましい。中間当接部１４の厚さは、薄すぎれば密封性が低くなったり口元部２１の変形が起こりやすくなるおそれがあり、厚すぎれば口元部２１の変形抑止効果に影響が及ぶ可能性があるが、厚さＴ１を前記範囲とすることによって、中間当接部１４から開口端面２１ｂへの押圧力を十分にしてキャップ１の密封性を良好にするとともに、口元部２１の変形抑止効果を高めることができる。   The thickness T1 of the intermediate contact portion 14 is preferably 0.2 to 2 mm. If the thickness of the intermediate contact portion 14 is too thin, the sealing performance may be lowered or the mouth portion 21 may be easily deformed. If the thickness is too thick, the deformation suppressing effect of the mouth portion 21 may be affected. However, by setting the thickness T1 within the above range, the pressing force from the intermediate contact portion 14 to the opening end surface 21b is sufficient to improve the sealing performance of the cap 1, and the deformation suppressing effect of the mouth portion 21 is enhanced. be able to.

図１および図４に示すように、中間当接部１４は、主に口元部２１の開口端面２１ｂに当接する。詳しくは、厚さ方向に圧縮変形した状態で開口端面２１ｂの一部領域に当接している。中間当接部１４は、下方への弾性的な反発力によって開口端面２１ｂに押圧状態で当接する。   As shown in FIGS. 1 and 4, the intermediate contact portion 14 mainly contacts the opening end surface 21 b of the mouth portion 21. Specifically, it is in contact with a partial region of the opening end face 21b in a state of being compressed and deformed in the thickness direction. The intermediate contact portion 14 is in contact with the open end surface 21b in a pressed state by an elastic repulsive force downward.

なお、ライナー５は、中間当接部１４がない構成、すなわち外側シール突起１３が内側シール突起１２の外方側に隣接して形成されている構成も可能である。   The liner 5 may have a configuration without the intermediate contact portion 14, that is, a configuration in which the outer seal protrusion 13 is formed adjacent to the outer side of the inner seal protrusion 12.

外側シール突起１３は、開口端部２１Ａに外縁側から当接する突起であり、内面１３ａの少なくとも開口端部２１Ａに当接する部分が拡径方向にいくほど下降するように傾斜した傾斜面である形状とされる。
図示例の外側シール突起１３は、突出方向に徐々に幅が狭くなる断面略台形状とされている。
この外側シール突起１３は、拡径方向にいくほど下降するように直線的に傾斜した内面１３ａと、内面１３ａの外縁から下面２ａに平行に形成された下面１３ｂと、下面２ａに垂直な外面１３ｃとを有する。 The outer seal protrusion 13 is a protrusion that comes into contact with the opening end 21A from the outer edge side, and is an inclined surface that is inclined so that at least a portion of the inner surface 13a that comes into contact with the opening end 21A descends in the diameter increasing direction. It is said.
The outer seal protrusion 13 in the illustrated example has a substantially trapezoidal cross section whose width gradually decreases in the protruding direction.
The outer seal protrusion 13 includes an inner surface 13a that is linearly inclined so as to be lowered in the diameter increasing direction, a lower surface 13b that is formed in parallel with the lower surface 2a from the outer edge of the inner surface 13a, and an outer surface 13c that is perpendicular to the lower surface 2a. And have.

図３に示すように、内面１３ａの傾斜角度α２（天板部２の下面２ａに対する傾斜角度）は例えば１０〜４５°とすることができる。
内面１３ａの傾斜角度は、小さすぎれば口元部２１の変形抑止効果および密封性が低くなり、大きすぎればキャップ１の巻締めしやすさに影響が及ぶが、傾斜角度α２を前記範囲とすることによって、巻締めしやすさを損なわずに、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 As shown in FIG. 3, the inclination angle α2 of the inner surface 13a (inclination angle with respect to the lower surface 2a of the top plate 2) can be set to 10 to 45 °, for example.
If the inclination angle of the inner surface 13a is too small, the deformation suppressing effect and the sealing performance of the mouth portion 21 will be low, and if it is too large, it will affect the ease of winding the cap 1, but the inclination angle α2 should be in the above range. Thus, the deformation suppressing effect of the mouth portion 21 and the sealing performance of the cap 1 can be improved without impairing the ease of winding.

内面１３ａの径方向の幅Ｗ３は、０．５〜２ｍｍが好ましい。
内面１３ａの幅は、小さすぎれば巻締めしやすさに影響が及び、大きすぎれば口元部２１の変形抑止効果および密封性が低くなるが、幅Ｗ２を前記範囲とすることによって、巻締めしやすさを損なわずに、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 The radial width W3 of the inner surface 13a is preferably 0.5 to 2 mm.
If the width of the inner surface 13a is too small, it will affect the ease of winding. If it is too large, the deformation suppressing effect and the sealing performance of the mouth portion 21 will be reduced. The deformation suppressing effect of the mouth portion 21 and the sealing performance of the cap 1 can be improved without impairing the ease.

図１および図４に示すように、外側シール突起１３の内面１３ａは、主に開口端部２１Ａの外縁湾曲部２１ｅに当接する。詳しくは、外側シール突起１３は厚さ方向に圧縮変形した状態で内面１３ａが外縁湾曲部２１ｅおよび開口端面２１ｂの一部領域に当接している。
内面１３ａは弾性的な反発力によって外縁湾曲部２１ｅおよび開口端面２１ｂの一部領域に押圧状態で当接する。内面１３ａからの押圧力は、下方にいくほど縮径する方向（図１の左斜め下方）の成分を含む。 As shown in FIGS. 1 and 4, the inner surface 13a of the outer seal projection 13 mainly contacts the outer edge curved portion 21e of the opening end portion 21A. Specifically, the inner surface 13a of the outer seal protrusion 13 is in contact with a partial region of the outer edge curved portion 21e and the opening end surface 21b in a state of being compressed and deformed in the thickness direction.
The inner surface 13a abuts against the outer edge curved portion 21e and a partial region of the opening end surface 21b in a pressed state by an elastic repulsive force. The pressing force from the inner surface 13a includes a component in the direction of decreasing the diameter (lower left diagonal in FIG. 1) as it goes downward.

下面１３ｂの径方向の幅Ｗ４は、０．１〜０．５ｍｍが好ましい。
下面１３ｂの幅は、小さすぎるか大きすぎれば口元部２１の変形抑止効果および密封性に影響が及ぶが、幅Ｗ３を前記範囲とすることによって、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 The radial width W4 of the lower surface 13b is preferably 0.1 to 0.5 mm.
If the width of the lower surface 13b is too small or too large, the deformation suppressing effect and the sealing performance of the mouth portion 21 will be affected. However, by setting the width W3 to the above range, the deformation suppressing effect of the mouth portion 21 and the sealing of the cap 1 are affected. Can be improved.

図示例では、外側シール突起１３の外面１３ｃは下面２ａに垂直（キャップ１の中心軸Ｃ１に沿う方向）に形成されている。外面１３ｃは、平板部５ａの外縁５ｃの端面５ｄと面一に形成するのが好ましい。
なお、外面１３ｃは、拡径方向にいくに従って上昇または下降する傾斜面としてもよい。 In the illustrated example, the outer surface 13c of the outer seal protrusion 13 is formed perpendicular to the lower surface 2a (in the direction along the central axis C1 of the cap 1). The outer surface 13c is preferably formed flush with the end surface 5d of the outer edge 5c of the flat plate portion 5a.
In addition, the outer surface 13c is good also as an inclined surface which rises or falls as it goes to a diameter expansion direction.

外側シール突起１３の高さＨ２（中間当接部１４からの高さ）は、０．２〜２ｍｍが好ましい。
外側シール突起１３は、低すぎれば口元部２１の変形抑止効果および密封性が低くなり、高すぎればキャップ１の巻締めしやすさに影響が及ぶが、高さＨ２を前記範囲とすることによって、巻締めしやすさを損なわずに、口元部２１の変形抑止効果およびキャップ１の密封性を良好にできる。 The height H2 (height from the intermediate contact portion 14) of the outer seal projection 13 is preferably 0.2 to 2 mm.
If the outer seal projection 13 is too low, the deformation suppressing effect and the sealing performance of the mouth portion 21 will be low, and if it is too high, it will affect the ease with which the cap 1 is tightened. The deformation suppressing effect of the mouth portion 21 and the sealing performance of the cap 1 can be improved without impairing the ease of winding.

図示例の外側シール突起１３は、内側シール突起１２より低く形成されている。
なお、外側シール突起１３は、内側シール突起１２と同じ高さとしてもよいし、内側シール突起１２より高く形成してもよい。 The outer seal projection 13 in the illustrated example is formed lower than the inner seal projection 12.
The outer seal protrusion 13 may be the same height as the inner seal protrusion 12 or may be formed higher than the inner seal protrusion 12.

図示例の外側シール突起１３の外縁１３ｄは、平板部５ａの外縁５ｃに達している。すなわち、外側シール突起１３は、ライナー５の最外位置に形成されており、外側シール突起１３の外径と平板部５ａの外径とは等しい。
外側シール突起１３がライナー５の最外位置に形成されることによって、外側シール突起１３は外方に変形しやすくなる。
なお、外側シール突起１３は、平板部５ａの外縁５ｃより内方寄りに形成してもよい。 The outer edge 13d of the outer seal protrusion 13 in the illustrated example reaches the outer edge 5c of the flat plate portion 5a. That is, the outer seal protrusion 13 is formed at the outermost position of the liner 5, and the outer diameter of the outer seal protrusion 13 is equal to the outer diameter of the flat plate portion 5a.
By forming the outer seal protrusion 13 at the outermost position of the liner 5, the outer seal protrusion 13 is easily deformed outward.
The outer seal protrusion 13 may be formed closer to the inner side than the outer edge 5c of the flat plate portion 5a.

ライナー５の外径（平板部５ａの外径および外側シール突起１３の外径）（図１の外径Ｄ１）は筒部３の内径（図１の内径Ｄ２）より小さい。このため、ライナー５の外縁５ｃ、１３ｄは筒部３に達していない。すなわち、平板部５ａおよび外側シール突起１３の外縁５ｃ、１３ｄは筒部３に対して内方側に離間して形成され、筒部３との間に空間を確保して形成されている。ライナー５の外縁５ｃ、１３ｄと筒部３との間の空間を外方側空間１５という。
外縁５ｃ、１３ｄと筒部３との距離は、例えば０．１〜２ｍｍとすることができる。
ライナー５の外径Ｄ１は、天板部２の主部２ｂの内径（内径Ｄ３）より小さいことが好ましい。 The outer diameter of the liner 5 (the outer diameter of the flat plate portion 5a and the outer diameter of the outer seal protrusion 13) (the outer diameter D1 in FIG. 1) is smaller than the inner diameter (the inner diameter D2 in FIG. 1) of the cylindrical portion 3. For this reason, the outer edges 5 c and 13 d of the liner 5 do not reach the cylindrical portion 3. That is, the outer edges 5 c and 13 d of the flat plate portion 5 a and the outer seal projection 13 are formed to be spaced inward from the cylindrical portion 3, and are formed with a space between the cylindrical portion 3. A space between the outer edges 5 c and 13 d of the liner 5 and the cylindrical portion 3 is referred to as an outer side space 15.
The distance between the outer edges 5c and 13d and the cylindrical portion 3 can be set to 0.1 to 2 mm, for example.
The outer diameter D1 of the liner 5 is preferably smaller than the inner diameter (inner diameter D3) of the main portion 2b of the top plate portion 2.

外側シール突起１３の外径Ｄ１は開口端部２１Ａの外径（外面２１ｃの上縁における外径）（図１の外径Ｄ４）より小さい。   The outer diameter D1 of the outer seal protrusion 13 is smaller than the outer diameter of the opening end 21A (the outer diameter at the upper edge of the outer surface 21c) (outer diameter D4 in FIG. 1).

ライナー５は、キャップ本体４よりも軟質の樹脂からなり、例えば、ポリプロピレン系樹脂またはポリエチレン系樹脂と、熱可塑性エラストマとを含む樹脂組成物が使用できる。ライナー５の表面硬度(デュロメータＤ) （ＪＩＳ Ｋ ７２１５に準拠）は２０〜６５が好ましい。   The liner 5 is made of a softer resin than the cap body 4, and for example, a resin composition containing a polypropylene resin or a polyethylene resin and a thermoplastic elastomer can be used. The surface hardness (durometer D) of the liner 5 (based on JIS K 7215) is preferably 20 to 65.

ＴＥリング部９の内周面には、開栓時に容器２０の係止段部２３に係止してＴＥリング部９の移動を阻止する係止突起である係止突起１１が形成されている。
係止突起１１は、ＴＥリング部９の内周面から内方に突出して形成されている。 On the inner peripheral surface of the TE ring portion 9, a locking projection 11 is formed that is a locking projection that locks with the locking step portion 23 of the container 20 to prevent the movement of the TE ring portion 9 when opening. .
The locking protrusion 11 is formed to protrude inward from the inner peripheral surface of the TE ring portion 9.

キャップ１は、ポリプロピレン、高密度ポリエチレンなどの合成樹脂材料で構成することができる。特に、ポリプロピレンを用いると、キャップ本体４に高い透明性を与えることができるため好ましい。   The cap 1 can be made of a synthetic resin material such as polypropylene or high-density polyethylene. In particular, it is preferable to use polypropylene because the cap body 4 can be provided with high transparency.

口元部２１に装着されたキャップ１を開栓方向に回すと、回転に従ってキャップ１は上昇する。
係止突起１１が容器２０の係止段部（図示略）の下端に達した状態でキャップ１をさらに開栓方向に回すと、主部８は回転に従って上昇する一方、係止突起１１が前記係止段部に係止するためＴＥリング部９の上方移動は阻止される。
その結果、主部８とＴＥリング部９とを連結しているブリッジ７に引張力が作用し、ブリッジ７が破断し、ＴＥリング部９が主部８から切り離される。
これによって、キャップ１が開栓されたことが明示される。 When the cap 1 attached to the mouth portion 21 is turned in the opening direction, the cap 1 rises according to the rotation.
When the cap 1 is further rotated in the opening direction with the locking projection 11 reaching the lower end of the locking step (not shown) of the container 20, the main portion 8 rises as it rotates, while the locking projection 11 Since the TE ring portion 9 is locked to the locking step portion, the upward movement of the TE ring portion 9 is prevented.
As a result, a tensile force acts on the bridge 7 connecting the main portion 8 and the TE ring portion 9, the bridge 7 is broken, and the TE ring portion 9 is separated from the main portion 8.
This clearly indicates that the cap 1 has been opened.

キャップ１が装着された口元部２１の外面を洗浄するには、洗浄水をキャップ１の外面に供給する。洗浄水は、洗浄水導入孔１６を通してキャップ１の内部に導入され、外面２１ｃを流下してキャップ１から流出する。これによって口元部２１は洗浄される。
上述のように、ライナー５の外縁５ｃ、１３ｄは筒部３に達していないため、洗浄水は、外縁５ｃ、１３ｄと筒部３との間の空間（外方側空間１５）にも流入する。このため、開口端部２１Ａの外面２１ｃを開口端面２１ｂに近い位置まで洗浄することが可能となる。 In order to clean the outer surface of the mouth portion 21 to which the cap 1 is attached, cleaning water is supplied to the outer surface of the cap 1. The washing water is introduced into the inside of the cap 1 through the washing water introduction hole 16, flows down the outer surface 21c, and flows out from the cap 1. As a result, the mouth portion 21 is washed.
As described above, since the outer edges 5c and 13d of the liner 5 do not reach the cylindrical portion 3, the cleaning water also flows into the space between the outer edges 5c and 13d and the cylindrical portion 3 (outer side space 15). . For this reason, it becomes possible to wash | clean the outer surface 21c of the opening edge part 21A to the position close | similar to the opening edge surface 21b.

キャップ１では、ライナー５の外縁５ｃが筒部３に対して内方側に離間して形成されているため、外側シール突起１３は筒部３から内方に離れた位置に形成されており、外側シール突起１３の外方側には空間（外方側空間１５）が確保されている。
このため、外側シール突起１３は、径方向外方の力が加えられると、外方側空間１５を利用して外方に容易に変形可能である。例えば、図１に２点鎖線で示すような外方変形が可能となる。よって、キャップ１を口元部２１に装着すると、外側シール突起１３は外方寄りに変形して外縁湾曲部２１ｅの少なくとも一部を覆う。 In the cap 1, since the outer edge 5 c of the liner 5 is formed to be spaced inward with respect to the cylindrical portion 3, the outer seal protrusion 13 is formed at a position spaced inward from the cylindrical portion 3, A space (outside space 15) is secured on the outer side of the outer seal protrusion 13.
Therefore, the outer seal protrusion 13 can be easily deformed outward using the outer space 15 when a radially outward force is applied. For example, outward deformation as shown by a two-dot chain line in FIG. 1 is possible. Therefore, when the cap 1 is attached to the mouth portion 21, the outer seal projection 13 is deformed outward to cover at least a part of the outer edge curved portion 21e.

外側シール突起１３の外径は開口端部２１Ａの外径より小さいため、外側シール突起１３は開口端部２１Ａに押されて外方に弾性変形した状態で開口端部２１Ａの外縁湾曲部２１ｅに当接することから、弾性反発力によりこの外縁湾曲部２１ｅに常に適正な押圧力で当接する。よって、確実な密封が可能である。
この弾性反発力は、外側シール突起１３が外方に変形した状態から復元する方向の弾性力であるため、単に圧縮された状態からの反発力に比べ過大になりにくい。
また、外側シール突起１３は、外方に変形可能であるため、口元部２１の外径寸法が変動した場合（特に外径が設計値より大きくなった場合）でも、外側シール突起１３が開口端部２１Ａに応じた形状となって適正な押圧力で外縁湾曲部２１ｅに当接する。このため、口元部２１の外径寸法の変動した場合でも確実な密封が可能である。
図１に２点鎖線で示す変形状態では、ライナー５は、外側シール突起１３（中間当接部１４より下方に位置する部分）だけでなく、中間当接部１４より高い位置にある部分（平板部５ａ）も外方に変形する。 Since the outer diameter of the outer seal protrusion 13 is smaller than the outer diameter of the opening end portion 21A, the outer seal protrusion 13 is pushed by the opening end portion 21A and elastically deformed outward, and is formed on the outer edge curved portion 21e of the opening end portion 21A. Because of the contact, the outer edge curved portion 21e is always contacted with an appropriate pressing force by an elastic repulsive force. Therefore, reliable sealing is possible.
This elastic repulsive force is an elastic force in a direction to restore from a state in which the outer seal projection 13 is deformed outward, and thus is less likely to be excessive than a repulsive force from a simply compressed state.
Further, since the outer seal protrusion 13 can be deformed outward, the outer seal protrusion 13 can be opened even when the outer diameter dimension of the mouth portion 21 fluctuates (particularly when the outer diameter becomes larger than the design value). It becomes a shape corresponding to the portion 21A and abuts on the outer edge curved portion 21e with an appropriate pressing force. For this reason, reliable sealing is possible even when the outer diameter of the mouth portion 21 varies.
In the deformed state shown by the two-dot chain line in FIG. 1, the liner 5 is not only the outer seal protrusion 13 (the part positioned below the intermediate contact part 14), but also the part (the flat plate) located at a position higher than the intermediate contact part 14. The part 5a) is also deformed outward.

ライナー５は、内側シール突起１２および中間当接部１４でも開口端部２１Ａに接するため、キャップ１では、ライナー５は、複数箇所、具体的には内側シール突起１２、中間当接部１４および外側シール突起１３の３か所でそれぞれ主に開口端部２１Ａの内縁湾曲部２１ｄ、開口端面２１ｂ、および外縁湾曲部２１ｅを押圧することから、確実な密封が可能となる。
よって、耐圧性を高めることができる。耐圧性は、例えば瞬間耐圧試験（ＳＳＴ）によって評価できる。 Since the liner 5 is also in contact with the opening end 21A even at the inner seal protrusion 12 and the intermediate contact portion 14, in the cap 1, the liner 5 has a plurality of locations, specifically, the inner seal protrusion 12, the intermediate contact portion 14, and the outer side. Since the inner edge curved portion 21d, the opening end surface 21b, and the outer edge curved portion 21e of the opening end portion 21A are mainly pressed at the three portions of the seal protrusion 13, reliable sealing is possible.
Therefore, pressure resistance can be increased. The pressure resistance can be evaluated by, for example, an instantaneous pressure resistance test (SST).

キャップ１では、ライナー５は、外側シール突起１３が変形により適度な押圧力で開口端部２１Ａに当接することに加え、複数箇所（前記３か所）で開口端部２１Ａに当接するため、各所の押圧力を低く設定できる。開口端部２１Ａに局所的に過大な力が加えられることがないため、口元部２１の機械的強度が低下する高温条件下でも口元部２１の変形を防止できる。
キャップ１は、口元部２１の変形が起こりにくいため、比較的強度が低い非結晶の口元部２１を有する容器２０を用いる場合に好適である。 In the cap 1, the liner 5 is in contact with the opening end 21 </ b> A at a plurality of locations (the three locations) in addition to being in contact with the opening end 21 </ b> A with an appropriate pressing force due to deformation. The pressing force can be set low. Since no excessive force is locally applied to the opening end 21A, deformation of the mouth 21 can be prevented even under high temperature conditions in which the mechanical strength of the mouth 21 is reduced.
The cap 1 is suitable for the case where the container 20 having the amorphous mouth portion 21 having relatively low strength is used because the mouth portion 21 hardly deforms.

キャップ１では、開口端部２１Ａに局所的に過大な力が加えられないため、開栓トルクを抑制できることから、開栓しやすさの点でも有利である。また、ライナー５の押圧力が局所的に大きくならないため、ライナー５の一部が削れて破片が生じるのを防止できる。
また、キャップ１では、ライナー５は、複数箇所、具体的には内側シール突起１２、中間当接部１４および外側シール突起１３の３か所で開口端部２１Ａを密封しているため、閉栓位置から密封解除までのキャップ１の回転角度（シールリリースアングル；Ｓ.Ｒ.Ａ.）を大きくでき、タンパーエビデンス性が良好となる。 In the cap 1, since an excessive force is not locally applied to the opening end portion 21A, the opening torque can be suppressed, which is advantageous in terms of easy opening. Further, since the pressing force of the liner 5 does not increase locally, it is possible to prevent a part of the liner 5 from being scraped and causing debris.
In the cap 1, the liner 5 seals the open end 21 </ b> A at a plurality of locations, specifically, the inner seal projection 12, the intermediate contact portion 14, and the outer seal projection 13. The rotation angle (seal release angle; S.R.A.) of the cap 1 from the release to the seal release can be increased, and the tamper evidence is improved.

図１等に示す閉止装置は、飲料を容器２０に充填し、口元部２１にキャップ１を装着することによって、飲料入り閉止装置とすることができる。
図１に示すキャップ１では、内側シール突起１２の形状は突出方向に徐々に幅が狭くなる断面略台形状とされているが、断面三角形状とすることもできる。例えば、内側シール突起１２は、図１において内面１２ａと外面１２ｃとを突出端に向けて延長した断面三角形状、すなわち拡径方向に向けて徐々に下降する傾斜面である内面１２ａと、これに隣接して拡径方向に向けて徐々に上昇する傾斜面である外面１２ｃとを有する断面三角形状とすることもできる。
また、外側シール突起１３の形状は、突出方向に徐々に幅が狭くなる断面略台形状に限らず、断面三角形状とすることもできる。例えば、外側シール突起１３は、図１において内面１３ａと外面１３ｃを突出端に向けて延長した断面三角形状、すなわち拡径方向に向けて徐々に下降する傾斜面である内面１３ａと、これに隣接して中心軸Ｃ１に沿う外面１３ｃとを有する断面三角形状とすることもできる。
ライナー５は、内側シール突起１２および外側シール突起１３の２か所で開口端部２１Ａを密封する構造としてもよい。 The closing device shown in FIG. 1 and the like can be made into a beverage containing closing device by filling a container 20 with a beverage and attaching the cap 1 to the mouth portion 21.
In the cap 1 shown in FIG. 1, the shape of the inner seal protrusion 12 is a substantially trapezoidal cross section whose width gradually narrows in the protruding direction, but may be a triangular cross section. For example, the inner seal protrusion 12 has a triangular cross-section in which the inner surface 12a and the outer surface 12c are extended toward the protruding end in FIG. 1, that is, the inner surface 12a which is an inclined surface gradually descending in the diameter increasing direction. It can also be made into the cross-sectional triangle shape which has the outer surface 12c which is an inclined surface which adjoins and gradually raises toward a diameter expansion direction.
The shape of the outer seal projection 13 is not limited to a substantially trapezoidal shape whose width gradually decreases in the protruding direction, but may be a triangular shape. For example, the outer seal protrusion 13 is adjacent to the inner surface 13a, which is a triangular cross section in which the inner surface 13a and the outer surface 13c are extended toward the protruding end in FIG. 1, that is, an inclined surface gradually descending in the diameter increasing direction. Then, it may be a triangular cross section having an outer surface 13c along the central axis C1.
The liner 5 may have a structure that seals the open end 21 </ b> A at two locations of the inner seal protrusion 12 and the outer seal protrusion 13.

１・・・キャップ（合成樹脂製キャップ）、２・・・天板部、２ａ・・・天板部の下面、３・・・筒部、５・・・ライナー、５ａ・・・平板部、５ｂ・・・下面、５ｃ・・・外縁、５ｄ・・・端面、１０・・・ネジ部、１２・・・内側シール突起、１３・・・外側シール突起、１３ａ・・・外側シール突起の内面、１３ｄ・・・外縁、１４・・・中間当接部、１５・・・外方側空間（空間）、１６・・・洗浄水導入孔、２０・・・容器、２１・・・口元部、２１Ａ・・・開口端部、２１ａ・・・内面、２１ｂ・・・開口端面、２１ｃ・・・外面、２１ｄ・・・内縁湾曲部（内縁）、２１ｅ・・・外縁湾曲部（外縁）、Ｄ１・・・外側シール突起の外径、Ｄ４・・・開口端部の外径。 DESCRIPTION OF SYMBOLS 1 ... Cap (synthetic resin cap), 2 ... Top plate part, 2a ... The lower surface of a top plate part, 3 ... Tube part, 5 ... Liner, 5a ... Flat plate part, 5b ... lower surface, 5c ... outer edge, 5d ... end face, 10 ... screw part, 12 ... inner seal projection, 13 ... outer seal projection, 13a ... inner surface of outer seal projection , 13d ... outer edge, 14 ... intermediate contact portion, 15 ... outer space (space), 16 ... washing water introduction hole, 20 ... container, 21 ... mouth part, 21A ... Open end, 21a ... Inner surface, 21b ... Open end, 21c ... Outer surface, 21d ... Inner edge curved portion (inner edge), 21e ... Outer edge curved portion (outer edge), D1 ... the outer diameter of the outer seal projection, D4 ... the outer diameter of the opening end.

Claims (8)

容器の口元部に装着される合成樹脂製キャップであって、
天板部とその周縁から垂下した筒部とを有するキャップ本体と、前記天板部下面に設けられたライナーとを備え、
前記ライナーは、平板部と、前記平板部下面に形成されて前記口元部の開口端部に内縁側から当接する内側シール突起と、前記平板部下面に形成されて前記口元部の開口端部に外縁側から当接する外側シール突起とを有し、
前記ライナーの外縁は、前記筒部に対して内方側に離れて前記筒部との間に空間を確保して形成され、
前記外側シール突起は、前記空間を隔てて前記キャップ本体から離れており、
前記外側シール突起の外径は、前記開口端部の外径より小さく、
前記合成樹脂製キャップを前記口元部に装着したときに、前記外側シール突起は、前記口元部の開口端部によって径方向外方に弾性的に変形して、少なくとも前記開口端部の外縁に押圧状態で当接することを特徴とする合成樹脂製キャップ。 A synthetic resin cap attached to the mouth of the container,
A cap body having a top plate portion and a cylindrical portion hanging from the periphery thereof, and a liner provided on the lower surface of the top plate portion,
The liner includes a flat plate portion, an inner seal protrusion formed on the lower surface of the flat plate portion and abutting on an opening end portion of the mouth portion from an inner edge side, and formed on the lower surface of the flat plate portion and formed on the opening end portion of the mouth portion. An outer seal protrusion abutting from the outer edge side,
The outer edge of the liner is formed in an inward side with respect to the cylinder part, ensuring a space between the cylinder part,
The outer seal protrusion is separated from the cap body across the space;
The outer diameter of the outer seal protrusion is smaller than the outer diameter of the opening end,
When the synthetic resin cap is attached to the mouth portion, the outer seal protrusion is elastically deformed radially outward by the opening end portion of the mouth portion, and is pressed against at least the outer edge of the opening end portion. A cap made of synthetic resin, which contacts in a state. 前記外側シール突起の外縁が、前記平板部の外縁に達して形成されていることを特徴とする請求項１に記載の合成樹脂製キャップ。   The synthetic resin cap according to claim 1, wherein an outer edge of the outer seal protrusion is formed to reach an outer edge of the flat plate portion. 前記外側シール突起の外面は、前記平板部の外縁の端面に面一に形成されていることを特徴とする請求項２に記載の合成樹脂製キャップ。   The synthetic resin cap according to claim 2, wherein an outer surface of the outer seal protrusion is formed flush with an end surface of an outer edge of the flat plate portion. 前記外側シール突起は、内面で前記開口端部に当接し、
前記内面は、拡径方向にいくほど下降する傾斜面であることを特徴とする請求項１〜３のうちいずれか１項に記載の合成樹脂製キャップ。 The outer seal protrusion is in contact with the opening end on the inner surface,
The synthetic resin cap according to any one of claims 1 to 3, wherein the inner surface is an inclined surface that descends as the diameter increases. 前記ライナーには、前記内側シール突起と前記外側シール突起との間に、前記天板部の下面に沿う中間当接部が形成され、
前記中間当接部は、前記開口端部の開口端面に当接可能であることを特徴とする請求項１〜３のうちいずれか１項に記載の合成樹脂製キャップ。 In the liner, an intermediate contact portion is formed between the inner seal projection and the outer seal projection along the lower surface of the top plate portion,
The synthetic resin cap according to any one of claims 1 to 3, wherein the intermediate abutting portion is capable of abutting against an opening end surface of the opening end portion. 前記筒部には、洗浄水を前記キャップ本体内に導く洗浄水導入孔が形成されていることを特徴とする請求項１〜５のうちいずれか１項に記載の合成樹脂製キャップ。   The synthetic resin cap according to any one of claims 1 to 5, wherein a cleaning water introduction hole for guiding cleaning water into the cap body is formed in the cylindrical portion. 飲料が充てんされる容器と、その口元部に装着される合成樹脂製キャップとを備えた閉止装置であって、
前記合成樹脂製キャップは、請求項１〜６のうちいずれか１項に記載のものであることを特徴とする閉止装置。 A closure device comprising a container filled with a beverage and a synthetic resin cap attached to the mouth part thereof,
The said synthetic resin cap is a thing of any one of Claims 1-6, The closing device characterized by the above-mentioned. 飲料が充填された容器と、その口元部に装着される合成樹脂製キャップとを備えた飲料入り閉止装置であって、
前記合成樹脂製キャップは、請求項１〜６のうちいずれか１項に記載のものであることを特徴とする飲料入り閉止装置。 A beverage-containing closing device comprising a container filled with a beverage and a synthetic resin cap attached to the mouth portion thereof,
The said synthetic resin cap is a thing of any one of Claims 1-6, The drink containing closure apparatus characterized by the above-mentioned.
JP2011285164A 2011-12-27 2011-12-27 Synthetic resin cap, closure device, and beverage closure device Expired - Fee Related JP5898948B2 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
JP2011285164A JP5898948B2 (en) 2011-12-27 2011-12-27 Synthetic resin cap, closure device, and beverage closure device
US14/368,632 US9718587B2 (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closing device, and beverage-contained closing device
ES12861824.6T ES2611406T3 (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closure device and closure device containing beverage
MX2014007764A MX2014007764A (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closure device and beverage-containing closure device.
CN201280064514.2A CN104053610B (en) 2011-12-27 2012-12-14 Synthetic resin lid, synthetic resin lid pad, plugging device and beverage bottle plugging device
IN5727DEN2014 IN2014DN05727A (en) 2011-12-27 2012-12-14
KR1020147019558A KR101582593B1 (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closure device and beverage-containing closure device
AU2012359370A AU2012359370A1 (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closure device and beverage-contained closure device
RU2014129330/12A RU2588438C2 (en) 2011-12-27 2012-12-14 Cover made of synthetic resin, cover gasket made of synthetic resin, closing device and closing device containing beverage
PCT/JP2012/082484 WO2013099655A1 (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closure device and beverage-containing closure device
EP12861824.6A EP2799362B1 (en) 2011-12-27 2012-12-14 Synthetic resin cap, synthetic resin cap liner, closure device and beverage-containing closure device
PH12014501451A PH12014501451B1 (en) 2011-12-27 2014-06-23 Synthetic resin cap, synthetic resin cap liner, closing device, and beverage-contained closing device
CL2014001734A CL2014001734A1 (en) 2011-12-27 2014-06-26 Synthetic resin lid to be attached to a mouth of a container, comprises a lid body having a plate and a cylinder that gradually descends from a peripheral edge thereof, and a coating provided on a lower surface of the upper plate; coating; closing device
ZA2014/05043A ZA201405043B (en) 2011-12-27 2014-07-10 Synthetic resin cap, synthetic resin cap liner, closing device, and beverage-contained closing device
AU2016202319A AU2016202319B2 (en) 2011-12-27 2016-04-13 Synthetic resin cap, synthetic resin cap liner, closure device and beverage-contained closure device

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WO2013099655A1 (en) 2013-07-04
CL2014001734A1 (en) 2015-02-27
PH12014501451A1 (en) 2014-10-08
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CN104053610B (en) 2017-06-06
EP2799362A1 (en) 2014-11-05
PH12014501451B1 (en) 2014-10-08
CN104053610A (en) 2014-09-17
US20150008223A1 (en) 2015-01-08
ES2611406T3 (en) 2017-05-08
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US9718587B2 (en) 2017-08-01
KR101582593B1 (en) 2016-01-05
MX2014007764A (en) 2015-04-13
EP2799362A4 (en) 2015-06-17
AU2012359370A1 (en) 2014-07-31
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RU2014129330A (en) 2016-02-10
ZA201405043B (en) 2015-12-23

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